| 摘要 |
PROBLEM TO BE SOLVED: To prevent an illegal act, such as single activities by a computer virus that has intruded into a personal computer, or impersonation frauds caused by linkage of the computer virus and a remote operator including a cracker.SOLUTION: A system device (line stopper) is installed between a personal computer and a hub and router as hardware. When a personal computer user feels abnormal operation of the personal computer, the user can turn on a forcible switch of the system device to disconnect communication with the outside. In addition, when the user of the personal computer is not present at a his/her desk, a human sensor and/or an operation sensor function and the system device disconnects communication.SELECTED DRAWING: Figure 1 |
